Tune In to the Midnight Heart

"Late at night, alone on my bed, your voice was the only thing that saved me. I want to talk to you again. There's something I want to say."

Without knowing her real name or face, Yamabuki Arisu, a second-year high school student, was looking for a girl named "Apollo'' who was a livestreamer. However, one day, Arisu gets a clue about Apollo from the broadcast club of the high school where she is going. There were 4 beautiful girls who dreamed of "getting a job related to voice"!! Who is Apollo? What will happen to the dreams of the four people?